Lamp for typewriter having adjustable leg bracket mounting



Dec. 15, 1970 FLETCHE 3,548,184

LAMP FOR TYPEWRITER HAVING ADJUSTABLE LEG BRACKET MOUNTING Filed April 16, 1968 2 Sheets-Sheet 1 FIG. 7.

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Mflfn F191 char WWW? ArraQA E Y5 United States Patent 3,548,184 LAMP FOR TYPEWRITER HAVING ADJUST- ABLE LEG BRACKET MOUNTING Milton Fletcher, Acme Lites, Rte. 9W, Congers, N.Y. 10920 Filed Apr. 16, 1968, Ser. No. 721,831

Int. Cl. F21v 33/00 U.S. Cl. 2402 10 Claims ABSTRACT OF THE DISCLOSURE A lamp assembly is described especially adapted for illuminating a platen of a typewriter, adding machine and the like. The lamp assembly has a base including a box containing transformer and other electrical parts. The box has a cover formed with an extension to which are pivotally attached a pair of leg brackets. These brackets facilitate mounting the lamp adjacent to a typewriter with the brackets disposed under the feet of the typewriter on a stand or table. A one-piece bracket is also disclosed to fit underneath a typewriter at the back or either side of the typewriter.

The invention relates to the art of lamp fixtures and more particularly concerns a fluorescent lamp having a novel mounting bracket structure for supporting the lamp adjacent to a typewriter, adding machine or other business or oflice machine.

According to the invention, a lamp assembly is provided with a vertically disposed, flat box which serves as a base of the assembly. The box carries a vertical post terminating in a flexible gooseneck at the end of which is a lamp head. This head includes a shade or reflector in which is a removable fluorescent lamp bulb. In the box is a transformer and terminal block of an electrical outlet. The. power supply cable is fed through the bottom wall of the box and wires extend to the transformer, terminal block and lamp head. The box has an open front closed by a removable cover. The cover is generally L shaped in cross section with a bottom extension and forwardly extending flange. To the flange are pivotally mounted two slotted brackets of different lengths or of the same size. The brackets are so arranged that they can fit adjustably under the legs of the typewriters of different sizes. The head of the fixture will overhang the typewriter to illuminate its platen.

The invention will be explained in further detail in connection with the drawings, wherein:

FIG. 1 is a perspective view of a lamp assembly embodying the invention.

FIG. 2 is an enlarged sectional view taken on line 22 of FIG. 1.

FIG. 3 is an exploded perspective view showing the lamp assembly in association with parts of a typewriter stand and typewriter.

FIG. 4 is a perspective view of the lamp assembly shown arranged for table mounting.

FIG. 5 is an enlarged fragmentary perspective view taken on line 5-5 of FIG. 4.

FIG. 6 is a perspective view similar to a portion of FIG. 1 showing a bracket extension structure.

FIG. 7 is an enlarged sectional view taken on line 77 of FIG. 6.

FIG. 8 is an oblique plan view of a one piece bracket for supporting a lamp assembly.

FIG. 9 is a view similar to FIG. 1 showing a one piece bracket.

Referring to the drawings, there is shown a lamp assembly 10 having a base 12 including a vertical, shallow, hollow, square box 14. The box has narrow top wall 15, bottom wall 16, side walls 18, 19 and back wall 20. The box has an open front 21 closed by a removable rectangular cover plate 22. Plate 22 has corner holes 24 receiving screws 26 which engage in threaded posts 28 secured to the inner of back wall 20; see FIG. 2. A further screw 29 engages in a reinforcement flange 30 extending downwardly from the top wall 15. Secured to the inner side of plate 22 by screws 32 is a transformer 34. A terminal block 36 of a convenience power outlet socket 38 is mounted in a hole in side wall 19. A power supply cable 40 terminating in a plug 44 extends through a hole in the bottom wall 16. One wire 42 of the cable extends to the top of the box along with a wire 45 from transformer 34. Power wire 43 is connected to transformer 34. Both wires 42 and 45 pass upwardly through a hollow rigid post 46 secured by a nut 48 to the top wall 15. At the upper end of post 46 is a flexible gooseneck 49 which terminates in a hollow swivel joint 50 carrying a lamp head 52. Wires 42 and 45 extend through the gooseneck 49 and joint 50 and terminate at the lamp head. The lamp head includes an elongated reflector 53 in Which are sockets 55 carrying removable tubular fluorescent lamp 54. Wires 42, 45 connect transformer 34 in circuit with lamp 54 and socket 55 to deliver power to the lamp. Branch wires 42' and 43 are connected to terminal block 36 of outlet socket 38 to supply power to this socket. On-oif switch 47 is mounted conveniently at reflector 53 in circuit with the lamp 54.

The cover plate 22 is longer in vertical length than the substantially square box 14. Extending forwardly from the extended bottom of the rectangular plate 22 is an integral horizontal flange 60. At opposite corners of this flange are rivets 62, 64 pivotally engaging two long, flat leg brackets 66 and 68. Bracket 66 is shorter than bracket 68. Bracket 66 has a slot 70 extending almost its full length. Bracket 68 has a long slot 71 extending about a third of the length of the bracket, the brackets are horizontal and pivot in a horizontal plane as indicated by arrows A and B in FIG. 1.

FIG. 3 shows clearly how the lamp 10 can be mounted in association with a typewriter on a stand 100. The stand is of conventional type with a rectangular open framelike top 102. Two mounting bars 104 extend parallel to each other between front and rear rails 106, 108 of the top 102. The bars 104 have slots 110 which receive bolts 112 at the bottom of cups 114. The bolts are engaged by nuts 115 under the bars 104. The bolts 112 of the two rear cups 114 pass through the slots 70 and 71 of leg brackets 66, 68. It will be apparent that the brackets can be pivoted so that the lamp is centered or otherwise disposed as desired over the platen 117 of the typewriter 90. The feet 116 at the bottom corners of the typewriter will fit in cups 114. The long slots 70, 71 and the pivotal arrangement of the brackets 66, 68 will accommodate the lamp mounting to typewriters and stands of different widths. The lamp head 52 will overhang the typewriter and the gooseneck can be adjusted to position the lamp '54 for desired intensity of illumination. The weight of the typewriter on its feet will supplement the holding power of nuts 115 in keeping the lamp erect and stationary behind the typewriter. The socket 38 is conveniently available to receive plug 120 at the end of power cable 122 which supplies power to the typewriter 90.

FIGS. 4 and 5 show another arrangement of the lamp 10, in which the lamp is mounted on top 125 of table 126. The brackets 66, 68 are spread out on table top 125. Bolts 112 of cups 114 extend through slots 70, 71 in the leg brackets 66, 68 and through holes 127 in the table top. Washers 128 and nuts 115 engage on the bolts to hold the cups securely to the table with the brackets 66,

68 disposed therebetween. The resilient feet 116 of the typewriter 90 are fitted in cup flanges 129 secured to base 130 of the typewriter. Feet 116 are seated in cups 114.

3 The rear feet of the typewriter in the rear cups 114 help to stabilize the lamp whose base 12 is located behind the typewriter. By the arrangement described it will be apparent that the brackets 66, 68 can be adjustable positioned laterally and pivoted forwardly to space the lamp base any desired distance behind the typewriter.

In both the arrangements of FIGS. 3 and 5, the weight of the typewriter is employed to assist in stabilizing the lamp supported on its base 12 behind the typewriter 90.

In FIGS. 6 and 7, is shown a bracket extension which can be used with either bracket 66 or 68 to extend the bracket adjustably. The bracket extension 150 has a long central slot 152 which registers with slot 71 in bracket 68. L-shaped flanges 154 at the rear portion of the bracket extension 150 extend downwardly at opposite edges of the bracket extension and frictionally engage underneath bracket 68. By this arrangement the bracket 68 can be adjustably extended any required length. If desired the bracket extension can be slidably fitted on bracket 66 instead of on bracket 68 as shown.

In FIG. 8 and 9 a one piece bracket is shown which can be used in place of brackets 66 or 68 to mount the lamp assembly at one side or rear of a typewriter. The bracket is generally L-shaped in plan view with an elongated flat bar 182 and a generally rectangular flange 184 extending laterally outwardly of bar 182. Flange 184 has corner portions 185 formed with two spaced holes 186 which receive and engage rivets 62, 64 of flange 60 so that bar 182 horizontal and spaced away from plate 22 parallel to flange 60. Bar 182 has two long, spaced slots 188, 190 which receive bolts 112 of cups 114. Bolt 112 will be engaged by nuts 115 and washers 128 as shown in FIG. 5.

It will be apparent that bar 182 can be mounted at the rear or either side of a typewriter. The head of the lamp assembly will then overhang the rear or either side of the typewriter. The long slots 188, 190 accommodate the bracket to typewriters of various sizes.

It will be understood that although the invention has been described in connection with a typewriter, it can just as readily be used in association with other machines such as adding machines, bookkeeping machines, cash registers, calculators and the like.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

What is claimed is:

1. A lamp assembly comprising a flat vertical generally square box for carrying a lamp head, said box having horizontal top and bottom walls, vertical side and back walls and an open front; a rectangular plate longer than said box removably secured to the open front of the box to close the same; and bracket means carried by said plate and adapted to be engaged under widely spaced rear feet of an office machine so that the box is held in vertical, fixed position behind the machine.

2. A lamp assembly as defined by claim 1, wherein said plate has a bottom end portion extending vertically below the bottom wall of the box with a flange extending 4 horizontally forward from the bottom edge of said end portion of the plate, said bracket means comprising two flat elongated leg brackets pivotally attached to opposite corners of said flange for adjustably engaging under foot mounting cups of the machine.

3. A lamp assembly as defined by claim 2, wherein said plate has a bottom end portion extending vertically below the bottom wall of the box with a first flange extending horizontally forward from the botom edge of said end portion of the plate; said bracket means comprising a long flat bar having a pair of aligned slots for engaging adjustably under the corner foot mounting cups of the machine and a generally rectangular other flange integral with the bar, said other flange extending laterally of and coplanar with said bar and having corner portions engaged with said first flange, so that the bar is spaced away from the box in horizontal disposition parallel to the first flange.

4. A lamp assembly as defined by claim 2, wherein each bracket has a central longitudinally extending slot for receiving a bolt of one of said cups.

5. A lamp assembly as defined by claim 4, wherein one of said leg brackets is longer than the other one.

6. A lamp assembly as defined by claim 5, further comprising a laterally flanged bracket extension slidably and adjustably fitted on either one of the leg brackets, said bracket extension having a longitudinal slot for receiving one of the bolts of one of said cups.

7. A lamp assembly as defined by claim 4, further comprising a post extending upwardly of the top wall, a gooseneck on the upper end of said post, and a lamp head carried at the outer end of said gooseneck.

8. A lamp assembly as defined by claim 7, further comprising a power supply cable extending into said box through the bottom wall thereof and having wires extending through said post and gooseneck to said lamp head, said end portion of the plate elevating the box to provide clearance for said cable at the bottom of the box.

9. A lamp assembly as defined by claim 8, further comprising a power outlet socket mounted at one side wall of the box and connected inside the box to the wires of said cable.

10. A lamp assembly as defined by claim 7, wherein said lamp head has a tubular fluorescent lamp bulb removably mounted therein; and a transformer in said box connected in circuit with said lamp bulb via said wires, said transformer being mounted on said plate inside of said box.

References Cited UNITED STATES PATENTS 2,668,901 2/1954 Austin 240-3 2,689,909 9/1954 Dazley 24052 2,851,587 8/1958 Stockman 2402TUX 3,104,064 9/1963 Bellek 240--52X 3,388,249 6/1968 Siegel et al 24081 JOHN M. HORAN, Primary Examiner K. C. HUTCHISON, Assistant Examiner U.S. Cl. X.R. 197180 

